NEC 2023 210.8 GFCI expansion: manufacturer response (deep dive 8)

What 210.8 Actually Changed

NEC 2023 pushed GFCI protection past the bathroom and kitchen counter. 210.8(A) now covers dwelling unit receptacles in basements, garages, outdoors, laundry areas, and anywhere within 6 feet of a sink, tub, or shower. 210.8(B) expanded non-dwelling coverage to include indoor damp locations and receptacles serving kitchen dishwashers.

The big shift sits in 210.8(F), which requires GFCI protection for outdoor outlets on dwelling units rated 150V to ground or less, 50A or less. That pulls in condenser units, heat pumps, and mini-split disconnects. 210.8(D) expands the sink rule. 210.8(A)(11) covers basement areas without the old unfinished/finished distinction.

For non-dwelling work, 210.8(B)(12) added crawl spaces and 210.8(B)(8) pulled laundry into the net. If you missed the 2020 cycle, the jump feels steep. Read the article cover to cover before you bid a remodel.

Where The Trouble Started

Nuisance tripping on HVAC condensers became the loudest complaint within weeks of the code taking effect in adopting states. Inverter-driven mini-splits, variable-speed pool pumps, and some well pumps trip Class A GFCIs on startup or during normal operation. The leakage current on high-frequency drive electronics sits right at the 6 mA threshold.

Refrigerators on shared GFCI circuits also lost food. Garage door openers with LED bulbs and soft-start motors tripped on temperature swings. Sump pumps in unfinished basements drew angry calls at 2 AM after storms.

Field tip: if a 210.8(F) install for a heat pump is tripping, pull the condenser nameplate and check the manufacturer's installation manual before you swap breakers. Most now list a dedicated GFCI requirement that ties to warranty.

How Manufacturers Responded

Equipment makers split into three camps. The HVAC side published field bulletins, redesigned drive boards to cut leakage, and in some cases voided warranties on units wired without GFCI protection per the manufacturer's spec. Carrier, Trane, Lennox, Mitsubishi, and Daikin all issued updated guidance between 2023 and 2025.

Breaker manufacturers rolled out products aimed at the problem. Square D, Eaton, Siemens, and Leviton now sell GFCI devices tuned to tolerate the leakage signatures of motor loads without raising the trip threshold past UL 943 limits. Some use self-testing logic and waveform analysis instead of raw RMS leakage.

• Square D HOM and QO GFCI breakers with updated firmware for inductive loads
• Eaton BR and CH GFCI breakers rated for HVAC duty
• Siemens QF2 series with tightened nuisance-trip filtering
• Leviton SmartlockPro receptacles with self-test and surge suppression
• Dead-front GFCI devices for condenser disconnects from multiple vendors

The third camp is the equipment side asking CMP-2 for carve-outs. The 2026 cycle has proposals to exclude certain hardwired appliances and industrial motor loads from 210.8 coverage. Nothing is final, and the AHJ still calls it until printed.

What Works In The Field

Dead-front GFCI at the disconnect is cleaner than a GFCI breaker at the panel for outdoor units. Shorter run, easier reset without walking to the basement, and the homeowner can troubleshoot a trip without pulling a panel cover. Price runs 40 to 80 dollars on most SKUs.

For circuits serving both a refrigerator and a general-use receptacle in a garage, split the load. 210.52(G) still requires at least one receptacle in the garage. Run a dedicated 20A GFCI to the fridge location and a second circuit for the door opener and outlets. It costs an extra home run and saves two callbacks.

Field tip: log the GFCI make, model, and install date on the inside of the panel cover with a Sharpie. When a trip call comes in two years later, you know whether it is the device failing or the load.

Wiring Methods That Reduce Callbacks

Keep GFCI-protected conductors separated from other circuits in long parallel runs. Capacitive coupling between conductors in shared raceway can push leakage past 4 mA before any fault exists. On pool and spa work, 680.22 and 680.23 already spell this out. Apply the same discipline to 210.8(F) runs over 50 feet.

Terminate the equipment ground to the enclosure, not just to the device yoke. Loose bonding is the single most common cause of intermittent GFCI trips on outdoor equipment. Torque to the manufacturer's spec, not by feel.

1. Confirm the load is listed for GFCI protection before you energize
2. Check conductor fill and derating on long outdoor runs
3. Use weather-resistant GFCI devices in all damp and wet locations per 406.9
4. Verify the disconnect means meets 440.14 for HVAC
5. Test with a plug-in tester and the device's self-test button before signing off

Where This Is Heading

UL 943 is under revision to address motor-load compatibility without weakening personnel protection. Draft language adds a test sequence for inverter-driven loads and tightens the definition of a nuisance trip versus a legitimate ground fault. Expect listed devices that meet the new standard to appear through 2026.

On the code side, watch the 2026 NEC ROP for 210.8(F) revisions. Several public inputs ask for exceptions covering hardwired HVAC where the manufacturer's listed installation includes internal ground-fault detection. Other inputs ask to pull laundry circuits back out of 210.8(A). Neither is settled.

Until then, install to the code your AHJ has adopted, document the device and date, and keep a spare GFCI breaker or two on the truck. The calls are coming either way.